The Yang-Lee theory of equilibrium phase transitions is generalized to study the non-equilibrium phase transitions of an urn model for the separation of sand and the quantum phase transitions of one-dimensional anisotropic XY quantum spin chain in a transverse field.
本文将李—杨平衡相变理论推广于研究沙粒分离的urn模型非平衡相变和一维横场各向异性XY模型量子相变。
The analytic expressions of the free energy and the critical transverse-field of the Systems are obtained.
利用离散路径积分表示与两自旋集团近似相结合的方法,研究了在弱横场作用下具有自旋为1的I(sing)模型的晶场效应,得到了系统的自由能和临界横场的解析表达式。
This article mainly discusses the phase transition properties of random transverse field mixed spin ferromagnetic system with crystal field.
在本文中我们采用随机横场与晶场共同作用下的混合伊辛自旋模型,计算并讨论了二维的蜂窝格子和平方格子系统的居里温度随晶场、横场和随机浓度的变化关系。
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